I've put together a list of what I and several others
have suggested for the forward calorimeter needs of the
June run. You'll note that all the rate/time estimates
are missing so far, I and others are working on these.
Any feedback is welcome.
- Will
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Run plan request for forward calorimeter (also partly CC)
Assumptions:
All sectors operational and gain-balanced by cosmics when possible.
All missing tubes identified and fixed when possible.
All adc-tdc cabling verified.
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----------------------------- MIP run --------------------------
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4 GeV beam energy.
Trigger EC low, IN*OUT.
No DC data to tape.
Minitorus ON
Luminosity (?)
Number of shifts (?)
Number of triggers (?)
Do FIRST in run period.
NOTE: need to set thresholds carefully to exclude background.
Background may depend on tune, => optimal thresholds may also.
Possible iterations of sector 1 and 4 HV will occur for gain match.
Purposes: hardware gain match sector 1 and 4
compare software gains from cosmics w/ gains from ~MIP.
compare attn lengths derived from cosmics with ~MIP.
timing offsets for narrow adc range, penetrating particles
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-------------------- e+p with B-field #1 -----------------------
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4 GeV beam energy, full field, INbending electrons
Trigger EC HI, < 800 MeV thresh, as low as possible
Minitorus ON
Luminosity (?)
Number of shifts (?)
Number of triggers (?)
Purposes: energy calibration, in i-j bins and global
energy linearity, i-j bins and global, higher energy range
derive timing walk functions, time offsets
exclusive reaction studies
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-------------------- e+p with B-field #2 -----------------------
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1.6 or 2.4 GeV beam energy, one-quarter or one-half field, INbending electrons
Trigger EC HI, < 300 MeV thresh, as low as possible
Minitorus ON
Luminosity (?)
Number of shifts (?)
Number of triggers (?)
Purposes: energy calibration, in i-j bins and global
high electron statistics at ~same angles as at 4 GeV
energy linearity, i-j bins and global, lower energy range
derive timing walk functions, time offsets
exclusive reaction studies
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-------------------- e+p with B-field #3 -----------------------
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1.6 or 2.4 GeV beam energy, full field, OUTbending electrons
Trigger EC HI, < 300 MeV thresh, as low as possible
Minitorus ON
Luminosity (?)
Number of shifts (?)
Number of triggers (?)
Purposes: Cerenkov counter efficiency, outbending neg. particles
energy calibration, in i-j bins and global
high electron statistics at ~different angles from previous
energy linearity, i-j bins and global
derive timing walk functions, time offsets
exclusive reaction studies
magnetic field shielding (?) Cerenkov counter
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-------------------- e+p with B-field #4 -----------------------
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4 GeV beam energy, full field, OUTbending electrons
Trigger EC HI, < 800 MeV thresh, as low as possible
Minitorus ON
Luminosity (?)
Number of shifts (?)
Number of triggers (?)
Purposes: Cerenkov counter efficiency for pi+ (infer pi- inbend. effic.)
energy calibration, in i-j bins and global
high electron statistics at ~different angles from previous
energy linearity, i-j bins and global
derive timing walk functions
exclusive reaction studies
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-------------------- other possiblities? -----------------------
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trigger with other detectors, e.g. TOF prescaled, TOF*EC